Since we're getting into forum games, I figured I'd throw my hat into the ring.
So, basically, you "drop" some kind of item or substance on the user that posts after you, and then that person reacts to it in whatever humorous way, and then they drop something. I've seen it done in other forums, and it is hilarious. So give it a shot and lets see if people take to it.
I drop a blu-ray player along with ROTF onto the user below.